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Old 15th April 2005, 04:48 PM   #11
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I think this is a X circuit!? It has two feedbackloops spanning across the two sides of the amp, and it has a connection between the sourcepins of the fets. Its loadad with a centertapped choke, very much similar to the SONOF ZEN with x and inductive loading (ZV 7-T) as Mr Pass calls it in the "more fun with the son of zen and supersymmetry" article
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Old 15th April 2005, 06:14 PM   #12
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Quote:
Originally posted by Circlomanen
Based on the numbers of replyes I dont think people are very intrested or they dont understand the circuit. I know the circlotron circuit confuses a lot of people, so im not very surprised.
I think this circuite had generated a lot more fuzz if THE MASTER had published aa article about it on his own website.Or maybe everybody is to much into the X things nowdays
I'm very pleased to see another permutation of the single-stage
approach. I have counted more than a hundred variations, not
including circlotrons, but I have only had time to build about
15 so far. There are about 10 left that I want to do, and that
leaves a lot of territory for others to explore.

It is very likely that the circlotron idea is confusing to a lot of
people - it takes a while to wrap your head around it. If you
push on with it (by this I mean build some) then you will see
more interest, I think.

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Old 15th April 2005, 06:29 PM   #13
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Quote:
I have counted more than a hundred variations, not
including circlotrons, but I have only had time to build about
15 so far. There are about 10 left that I want to do
WOW!!! Im VERY CURIOUS about the 10 that you have left to try!

Quote:
It is very likely that the circlotron idea is confusing to a lot of
people - it takes a while to wrap your head around it. If you
push on with it (by this I mean build some) then you will see
more interest, I think.
Yes probably! Im building it tonight. Im very curious about the Zenitron to. See how good it works (if it works ).
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Old 15th April 2005, 11:11 PM   #14
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A little warning if anybody tries to build any of my circlotron-amps. If a solderjoint or a fet goes to hifiheaven, then so will your speaker! Very fast. You might like to run it with a big capacitor on the output the first couple of hours.The quiesent current of one side is interdependent of the other side so if one side turns off, the other will open, i think.That means 20 volt DC directly on your woofer. Experiense!
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Old 16th April 2005, 12:20 AM   #15
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Default NOW PLAYING AT AT THEATRE FAR FRON YOU.

ITs ALIVE!!!
With a quisent current of about 100mA it can play realy loud (bieng this late at night in sweden) I cant realy comment on the sound since im only playing it on my junkspeaker.
More tomorow.
Anybody want to see pics??
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Old 16th April 2005, 04:21 AM   #16
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Is that a rhetorical question?

Of course everyone wants to see pics!
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Old 16th April 2005, 09:31 AM   #17
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Quote:
ITs ALIVE!!!
With a quisent current of about 100mA it can play realy loud (bieng this late at night in sweden) I cant realy comment on the sound since im only playing it on my junkspeaker.
More tomorow.
Its one strange amp!
Yesterday when i started listening to it, one FET ran 300 mA through the circuit but the other FET was closed.And it still played music! The bass was a bit strange and weak but thats probably because of saturation in the choke-core.
I noticed it when i started measuring everything thios morning, and by the hum and noice that i was hearing. It shouldnt be any noice from a balanced circuit at idle.
The very strange part of it is that there was no DC offset on the output!???
Its seems to be an extremly stable and selfcorrecting amp. When i balaced out the currents it realy started to sing! It sounds beutifull!!!
At the moment im running it in class A/B.

Pictures are comming later, I have to go to work.
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Old 16th April 2005, 07:20 PM   #18
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Click the image to open in full size.
WOW!! That many componenents!!!
The little transformer on the side is my little singelend-balanced-converter.
Click the image to open in full size.
That big piece of iron is my centertapped choke.
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Old 16th April 2005, 09:43 PM   #19
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A lot of us will be happy if you can explain more how the Circlotron circuit works...especially as you presented it. Then we can share with your excitement Thanks!
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Old 16th April 2005, 09:47 PM   #20
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Some more circlotronamps:
Click the image to open in full size.
This is the ZEN version 2 with a ALEPH current source but in a horizontal arrangement,AKA circlotron. Singel end circlotron.
Notice, You dont need any coupling capacitor on the output!

Click the image to open in full size.
And this is the ZENITRON singelend with a powerresistor and a lightbulb instead of ALEPH currentsource.
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